Stanford University researchers unveiled today theoretical results on a system for wirelessly charging, at up to 97% efficiency, electric cars as they drive down the road.

Researchers at Stanford University today announced promising results of a theoretical study into wirelessly charging electric cars while they’re driving down the road. If the system behaves as the theory suggests, this would solve electric vehicle range limitations by keeping the vehicle charged while driving.

The researchers designed a highly efficient system for transferring electricity wirelessly using magnetic resonant coupling. Two copper coils, one in the road and the other in the car, are tuned to resonate at the same frequency. The efficiency of the system depends on the precise configuration of the coils, the resonant frequency, and the distance between the coils.
More torquernews.com